EP 3364155 A4 20190612 - A METHOD FOR INITIAL ALIGNMENT OF AN INERTIAL NAVIGATION APPARATUS
Title (en)
A METHOD FOR INITIAL ALIGNMENT OF AN INERTIAL NAVIGATION APPARATUS
Title (de)
VERFAHREN ZUR ANFÄNGLICHEN AUSRICHTUNG EINER TRÄGHEITSNAVIGATIONSVORRICHTUNG
Title (fr)
PROCÉDÉ D'ALIGNEMENT INITIAL D'UN APPAREIL DE NAVIGATION INERTIELLE
Publication
Application
Priority
- CN 201510669553 A 20151013
- CN 2016088343 W 20160704
Abstract (en)
[origin: EP3364155A1] A method for initial alignment of an inertial navigation apparatus, comprising the following steps: providing an apparatus loaded with a sensor, and preprocessing the sensor; carrying out relative alignment to calculate an installation error angle of the sensor; carrying out absolute alignment to calculate an installation attitude angle error of the sensor to increase an accuracy of an error attitude angle calculated during the relative alignment. The relative alignment process calculates a relative error attitude angle, the relative error attitude angle being used as the initial value for attitude error in a stat vector in the absolute alignment process, thereby accelerating convergence of the Kalman filter. Alignment precision is further enhanced by the absolute alignment process.
IPC 8 full level
G01C 25/00 (2006.01); G01B 21/22 (2006.01); G01P 21/00 (2006.01)
CPC (source: CN EP KR RU US)
G01C 21/18 (2013.01 - KR); G01C 21/188 (2020.08 - CN EP KR RU US); G01C 25/00 (2013.01 - EP RU US); G01C 25/005 (2013.01 - CN EP KR US)
Citation (search report)
- [XI] US 2008208501 A1 20080828 - FIEDLER JENS [DE], et al
- [XI] CN 102168991 A 20110831 - UNIV NORTH CHINA
- [XI] CN 101975872 A 20110216 - UNIV HARBIN ENG
- See references of WO 2017063388A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
EP 3364155 A1 20180822; EP 3364155 A4 20190612; CN 105203129 A 20151230; CN 105203129 B 20190507; KR 101988786 B1 20190612; KR 20170104623 A 20170915; RU 2670243 C1 20181019; RU 2670243 C9 20181204; US 10670424 B2 20200602; US 2018274940 A1 20180927; WO 2017063388 A1 20170420
DOCDB simple family (application)
EP 16854771 A 20160704; CN 201510669553 A 20151013; CN 2016088343 W 20160704; KR 20177023784 A 20160704; RU 2017125038 A 20160704; US 201615542442 A 20160704